A kind of soundproofing cloth air blower for cabin ventilation

Abstract

The present invention relates to the field of marine auxiliary equipment, and specifically discloses a silent air distribution device for cabin ventilation, comprising an air distribution device body, an air inlet arranged at one end of the air distribution device body, and an air outlet arranged at the bottom of the air distribution device body, wherein a uniform air distribution component is arranged at the air outlet, and the uniform air distribution component comprises a driving component and a flow guide component; the flow guide component comprises a first flow guide cone in an inverted cone shape arranged below the air outlet, and a ring-shaped air distribution disk is fixedly arranged on the outer side of the lower end of the first flow guide cone, and through grooves are uniformly arranged on the periphery of the air distribution disk. The silent air distribution device for cabin ventilation, through the uniform air distribution component arranged at the air outlet, is composed of a driving component and a flow guide component, and the driving component continuously drives the flow guide component to rotate and adjust, so that the airflow can be guided in multiple directions when the air is discharged, so that the airflow can be evenly distributed in the cabin, thereby improving the comfort level in the cabin.

Description

Technical Field

[0001] The invention relates to the field of marine auxiliary equipment, and in particular to a silencer air cloth for cabin ventilation. Background Art

[0002] Marine air ductors are mainly used at the end of the air conditioner blower inside the cabin to deliver air from the air conditioner, mix it evenly with the indoor air, and then distribute it to the cabin for ventilation. Air ductors generally consist of a shell and an air inlet and an air outlet arranged on the shell. The air inlet is used to connect the hot air or cold air from the air conditioner, and the air outlet is used to discharge the hot air or cold air into the cabin.

[0003] The air outlet of the air handler in the prior art is generally arranged vertically downward. Without interference, the air flow generally flows vertically downward. Blowing in one direction will cause uneven air flow distribution, and then cause uneven air distribution, affecting comfort. Although some air handlers are provided with baffles at the air outlet, the air flow can only flow out horizontally to the surroundings due to the baffle, resulting in the inability to directly obtain air flow supplement directly below the air handler, which also affects the uniformity of air distribution and is not practical.

[0004] Therefore, it is necessary to propose a silencer air cloth device for cabin ventilation to solve the above problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a sound-absorbing air distribution device for cabin ventilation, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A sound-absorbing air distribution unit for cabin ventilation, comprising an air distribution unit body, an air inlet arranged at one end of the air distribution unit body, and an air outlet arranged at the bottom of the air distribution unit body, wherein a uniform air distribution component is arranged at the air outlet, and the uniform air distribution component comprises a driving component and a flow guide component;

[0008] The air guide component includes a first air guide cone in an inverted cone shape arranged below the air outlet, an annular air distribution plate is fixedly arranged on the outer side of the lower end of the first air guide cone, through grooves are evenly arranged on the periphery of the air distribution plate, the through grooves are rotatably connected to an adjustment shaft radially perpendicular to the air distribution plate, and an air distribution sheet is fixedly arranged on the adjustment shaft.

[0009] Preferably, the drive assembly includes a rotating drum fixedly arranged on the top of the first guide cone, a second driving groove is arranged on the inner side of the lower end of the first guide cone, a vertical shaft is vertically arranged at the top of the inner cavity of the air distribution device body and the corresponding position of the rotating drum, the lower end of the vertical shaft extends to the inner side of the second driving groove and is fixedly provided with a driving disk, and the vertical shaft is rotatably connected to the rotating drum and the inner side of the first guide cone, a gear ring is fixedly arranged on the outer side of the upper end of the rotating drum, a first gear meshing with the gear ring is arranged at one end of the inner side of the air distribution device body, a motor for driving the first gear to rotate is arranged at the upper end of the air distribution device body, arc-shaped depressions corresponding to the air distribution sheets are evenly arranged on the periphery of the driving disk, and arc-shaped protrusions are formed between adjacent arc-shaped depressions, and a groove matching the shape of the driving disk is arranged at the bottom of the driving disk, and the groove The cam is an angular channel formed on a pair of camshafts, each of which is adapted to move relative to the second gear of the drive shaft, the channel having a central axis that is adapted to move relative to the first gear and a central axis that is adapted to move relative to the second gear.

[0010] A second guide hole with a regular polygonal cross section is provided at the top of the vertical axis, a guide column is vertically movablely connected to the inner side of the second guide hole, and the top of the guide column is fixedly connected to the top of the inner cavity of the air distributor body.

[0011] Preferably, the air distribution piece is fan-shaped, and the size of the air distribution piece is smaller than the size of the through slot.

[0012] Preferably, a first guide hole is provided at the end of the driving rack away from the roller, the first guide hole is movably guided and connected with a guide rod, and the end of the guide rod away from the driving rack is fixedly connected to the inner wall of the first driving groove, and a spring located outside the first guide hole is sleeved on the outer side of the guide rod.

[0013] Preferably, a second guide cone corresponding to the air inlet is laterally movably provided at one end of the inner side of the air distributor body close to the air inlet.

[0014] Preferably, an air volume adjustment assembly is provided in the air distributor body, and the air volume adjustment assembly includes a traction plate vertically movably arranged at the front and rear ends of the inner side of the air distributor body, an inclined guide groove is arranged on the side surface of the traction plate at one end close to the second guide cone, and the side wall of the traction plate at one end away from the second guide cone is fixedly connected with a first guide hole corresponding to the rotating drum, the upper end of the rotating drum is rotatably connected with a swivel corresponding to the first guide hole, and the end of the first guide hole away from the traction plate is fixedly connected to the outer wall of the swivel, guide shafts corresponding to the guide groove are symmetrically arranged on the front and rear sides of the second guide cone, and the end of the guide shaft away from the second guide cone is movably guided and connected to the inner side of the guide groove, a connecting arm is commonly fixedly arranged between the two traction plates, and a screw rod corresponding to the connecting arm is vertically threadedly connected to the bottom of the air distributor body, and the upper end of the screw rod is rotatably connected to the connecting arm, and a knob is arranged at the bottom of the screw rod.

[0015] Preferably, the guide groove and the guide shaft are configured so that when the traction plate moves upward, the second guide cone approaches the direction of the air inlet.

[0016] Preferably, the second guide cone is provided with an opening on a side away from the air inlet;

[0017] The inner wall of the air distributor body is fitted with a sound-absorbing cotton felt, and the end of the sound-absorbing cotton felt away from the air inlet is an arc-shaped surface.

[0018] Preferably, a cavity is provided inside the wall of the air distributor body.

[0019] Preferably, the inner wall of the air inlet, the inner wall of the air outlet, the inner and outer walls of the second guide cone, the outer wall of the first guide cone, the top of the air distribution plate and the bottom of the air distribution sheet are all provided with sound-absorbing coating.

[0020] Compared with the prior art, the present invention provides a sound-absorbing air cloth device for cabin ventilation, which has the following beneficial effects:

[0021] 1. The silencer air distribution device for cabin ventilation is composed of a driving component and a flow guide component through a uniform air distribution component arranged at the air outlet. The driving component continuously drives the rotation adjustment of the flow guide component, so that the airflow can be guided in multiple directions when the air is discharged, so that the airflow can be evenly distributed in the cabin, thereby improving the comfort in the cabin, having a compact structure, convenient operation and increased practicality.

[0022] 2. The silencer air cloth for cabin ventilation is arranged in linkage with the first guide cone through the air volume adjustment component, so that the air volume at the air outlet can be adjusted while adjusting the air volume at the air inlet. Synchronous adjustment of the size of the air inlet and the air outlet helps to maintain the balance of the ventilation system, keeps the air volume and the air volume relatively consistent, reduces internal pressure fluctuations, improves the stability of the system, helps to reduce noise, is easy to operate, and increases practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0025] Figure 3 yes Figure 2 A structural diagram from another perspective based on the above;

[0026] Figure 4 It is a schematic diagram of the overall structure of the uniform air distribution component and the air volume adjustment component of the present invention;

[0027] Figure 5 It is a schematic diagram of the overall structure of the rotary drum, the air distribution disk and the vertical shaft of the present invention;

[0028] Figure 6 yes Figure 5 Schematic diagram of the cross-section structure on the foundation;

[0029] Figure 7 yes Figure 5 Schematic diagram of the structure when the foundation is disassembled;

[0030] Figure 8 yes Figure 7 A structural diagram from another perspective based on the above;

[0031] Fig. 9 It is a schematic diagram of the structure inside the air distribution disk of the present invention;

[0032] Fig.10 This is a schematic diagram of the structure of the air distribution disk of the present invention from the bottom perspective;

[0033] Fig.11 It is a schematic diagram of the structure of the air distribution plate, the driving plate and the air distribution plate of the present invention in a disassembled state;

[0034] Fig.12 It is a schematic diagram of the overall structure of the air distribution plate and the driving rack of the present invention;

[0035] Fig.13 It is a schematic diagram of the structure of the guide rod and the driving rack of the present invention in a disassembled state;

[0036] Fig.14 It is a schematic diagram of the structure of the air volume regulating assembly of the present invention in a disassembled state;

[0037] Fig.15 It is a schematic diagram of the internal airflow direction of the air distributor body of the present invention.

[0038] In the figure: 1. air distribution device body; 2. air inlet; 3. air outlet; 4. air distribution plate; 5. motor; 6. first guide cone; 7. sound-absorbing cotton felt; 8. second guide cone; 9. traction plate; 10. first gear; 11. rotating drum; 12. cavity; 13. knob; 14. gear ring; 15. air distribution plate; 16. vertical axis; 17. guide column; 18. swivel; 19. guide groove; 20. connecting arm; 21. driving plate; 22. groove; 23. through groove; 24. first driving groove; 25. driving rack; 26. roller; 27. adjusting shaft; 28. universal joint; 29. ​​second gear; 30. guide rod; 31. rotating shaft; 32. spring; 33. first guide hole; 34. screw rod; 35. guide shaft; 36. slider; 37. second driving groove; 38. second guide hole. DETAILED DESCRIPTION

[0039] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0040] like Figure 1-Figure 13 As shown, a silencer air distribution unit for cabin ventilation comprises an air distribution unit body 1, an air inlet 2 arranged at one end of the air distribution unit body 1, and an air outlet 3 arranged at the bottom of the air distribution unit body 1 away from the air inlet 2, wherein a uniform air distribution component is arranged at the air outlet 3, and the uniform air distribution component comprises a driving component and a flow guide component, wherein the flow guide component comprises a first flow guide cone 6 in an inverted cone shape arranged below the air outlet 3, an annular air distribution disk 4 is fixedly arranged on the outer side of the lower end of the first flow guide cone 6, and the periphery of the air distribution disk 4 is uniformly provided with through grooves 23, and the through grooves 23 are rotatably connected to an adjusting shaft 27 radially perpendicular to the air distribution disk 4, and an air distribution piece 15 is fixedly arranged on the adjusting shaft 27, and the air distribution piece 15 is fan-shaped, and the size of the air distribution piece 15 is set to be smaller than the size of the through groove 23 to avoid motion interference during rotation;

[0041] As a preferred embodiment, the drive assembly includes a rotating drum 11 fixedly arranged on the top of the first guide cone 6, a second driving groove 37 is arranged on the inner side of the lower end of the first guide cone 6, a vertical shaft 16 is vertically arranged at the top of the inner cavity of the air distributor body 1 corresponding to the rotating drum 11, and the vertical shaft 16 is arranged to be unable to rotate around its axis, the lower end of the vertical shaft 16 extends to the inner side of the second driving groove 37 and is fixedly arranged with a driving disk 21, and the vertical shaft 16 is rotatably connected to the rotating drum 11 and the inner side of the first guide cone 6 through a bearing. Then, a gear ring 14 is fixedly arranged on the outer side of the upper end of the rotating drum 11, and a first gear 10 meshing with the gear ring 14 is arranged at one end of the inner side of the air distribution unit body 1. A motor 5 for driving the first gear 10 to rotate is arranged on the upper end of the air distribution unit body 1. The motor 5 can be provided with a noise reduction shell on the outer side to reduce the noise of its operation. The outer periphery of the driving disk 21 is evenly provided with arc-shaped depressions corresponding to the air distribution sheets 15, and arc-shaped protrusions are formed between adjacent arc-shaped depressions. The bottom of the driving disk 21 is provided with The driving disk 21 has a groove 22 that matches the shape of the driving disk 21, and a flange is formed between the inner wall of the groove 22 and the outer wall of the driving disk 21. The inner side of the outer periphery of the air distribution disk 4 is evenly provided with first driving grooves 24 that are spaced apart from the through grooves 23 and correspond to the second driving grooves 37. One end of the adjusting shaft 27 extends to the inner side of the first driving groove 24. A rotating shaft 31 corresponding to the adjusting shaft 27 and radially perpendicular to the air distribution disk 4 is rotatably provided at one end of the inner side of the first driving groove 24. One end of the rotating shaft 31 and the adjusting shaft 27 extend to the first driving groove 24. A universal joint 28 is arranged between one end of the inner side of the driving groove 24, and a second gear 29 is arranged on the rotating shaft 31. A driving rack 25 meshing with the second gear 29 is movably connected to the inner side of the first driving groove 24 along the radial direction of the air distribution disk 4, and one end of the driving rack 25 extends to the inner side of the second driving groove 37 and is rotatably arranged thereon. A pair of vertical rollers 26 are arranged thereon, and the two rollers 26 are respectively located on the inner side of the groove 22 and the outer side of the driving disk 21, and the spacing between the two rollers 26 is adapted to the flange wall thickness.

[0042] like Figure 12-13 As shown, in order to increase the stability of the driving rack 25, a first guide hole 33 is provided at the end of the driving rack 25 away from the roller 26, and the first guide hole 33 is movably guided and connected with a guide rod 30, and one end of the guide rod 30 away from the driving rack 25 is fixedly connected to the inner wall of the first driving groove 24, and each driving rack 25 corresponds to two guide rods 30, and a spring 32 located outside the first guide hole 33 is sleeved on the outer side of the guide rod 30. The spring 32 can shrink when displaced outward, and can gradually reset when displaced inward, and the reverse force can prevent loosening.

[0043] like Figure 2-Figure 4 , Figure 14-15 As shown, a second guide cone 8 corresponding to the air inlet 2 is laterally movably provided at one end of the inner side of the air distributor body 1 close to the air inlet 2, and the second guide cone 8 is used to adjust the air inlet volume.

[0044] like Figure 2-Figure 4 , Fig.14 As shown, an air volume regulating assembly is provided in the air distributor body 1, and the air volume regulating assembly includes a traction plate 9 vertically movably arranged at the front and rear ends of the inner side of the air distributor body 1. In order to increase stability, the front and rear ends of the inner side of the air distributor body 1 are provided with guide rails corresponding to the traction plate 9, and the traction plate 9 is movably guided and cooperated with the guide rails. An inclined guide groove 19 is provided on the side of the traction plate 9 at one end close to the second guide cone 8, and a first guide hole 33 corresponding to the rotating drum 11 is fixedly connected to the side wall of the end of the traction plate 9 away from the second guide cone 8, and a rotating ring 18 corresponding to the first guide hole 33 is rotatably connected to the upper end of the rotating drum 11, and the end of the first guide hole 33 away from the traction plate 9 is fixedly connected to the outer wall of the rotating ring 18, and the front and rear sides of the second guide cone 8 are symmetrically provided with guide grooves 19 The guide groove 19 and the guide shaft 35 are configured so that when the traction plate 9 moves upward, the second guide cone 8 approaches the air inlet 2. A connecting arm 20 is fixedly arranged between the two traction plates 9. The bottom of the air distributor body 1 is vertically threadedly connected with a screw rod 34 corresponding to the connecting arm 20, and the upper end of the screw rod 34 is rotatably connected to the connecting arm 20. A knob 13 is arranged at the bottom of the screw rod 34. In order to increase the stability of the second guide cone 8, sliders 36 are fixedly arranged at the top and bottom of the second guide cone 8. The top and bottom of the inner cavity of the air distributor body 1 are provided with guide rails corresponding to the slider 36, and the slider 36 cooperates with the guide rails for movable guidance.

[0045] The inner wall of the air inlet 2, the inner wall of the air outlet 3, the inner and outer walls of the second guide cone 8, the outer wall of the first guide cone 6, the top of the air distribution plate 4, the bottom of the air distribution sheet 15, the outer wall of the rotating drum 11, the outer wall of the connecting arm 20, and the outer wall of the traction plate 9 are all provided with a sound-absorbing coating, and the sound-absorbing coating can be a damping coating or an inorganic fiber coating;

[0046] The damping coating is a coating that can effectively reduce structural vibration and noise. It is composed of a damping layer and a constraint layer. When the damping coating is applied, the damping characteristics of the coating can be used to absorb and transform the energy generated by the vibration of the wind duct, thereby reducing the propagation of noise. The damping coating has the advantages of simple construction, strong adhesion, good durability, etc., and is suitable for wind ducts of various materials.

[0047] Sprayed inorganic fiber coating has good thermal insulation and sound insulation properties and can absorb and isolate noise. At the same time, it has the advantages of good temperature resistance, not easy to fall off and quick construction.

[0048] Further, such as Figure 2-Figure 3 , Fig.15As shown, a sound-absorbing cotton felt 7 is fitted on the inner wall of the air distributor body 1, and the end of the sound-absorbing cotton felt 7 away from the air inlet 2 is an arc-shaped surface. The arc-shaped surface can guide the airflow and reduce some noise. At the same time, the sound-absorbing cotton felt 7 can use the porous structure of the sound-absorbing cotton felt 7 to absorb the energy of sound. When the sound propagates to the sound-absorbing cotton felt 7, the sound wave will cause the air molecules inside the sound-absorbing cotton felt 7 to vibrate, and the sound energy will be converted into heat energy through friction and viscosity, thereby further reducing the intensity of the noise. Moreover, when the airflow reaches the arc-shaped surface, a collision will occur, and part of the airflow will flow out from the air outlet 3, and part of the airflow will flow in the direction of the air inlet 2. An opening is provided on the side of the second guide cone 8 away from the air inlet 2. The airflow can enter the inner side of the opening of the second guide cone 8 and collide, and then return to the end of the sound-absorbing cotton felt 7 away from the air inlet 2, and the collision with the inner wall of the second guide cone 8 and the effect of the sound-absorbing coating can further reduce the sound.

[0049] Specifically, the airflow will collide multiple times inside the air inlet 2, and the collisions can cause the airflow to form eddies and turbulence in the air distributor body 1. Eddies and turbulence are complex flow phenomena that can consume sound energy and change the propagation direction of sound waves. The airflow velocity, pressure and density distribution in eddies and turbulence are uneven. This unevenness will cause sound waves to scatter, reflect and interfere during propagation, thereby reducing the intensity and directionality of the noise. Moreover, the sound waves are reflected and interfered multiple times between obstacles inside the air inlet 2. When the airflow collides, it may change the reflection path and interference pattern of the sound waves, causing some sound waves to cancel or weaken each other. This complex process of sound wave reflection and interference helps to reduce the perceived intensity of noise.

[0050] In addition, if Figure 2-Figure 3 As shown, a cavity 12 is provided inside the wall of the air distributor body 1. The cavity 12 can increase the path length of sound propagation, so that the sound is reflected and attenuated multiple times in the hollow layer, thereby reducing the propagation of noise;

[0051] The sound-absorbing cotton felt 7, the cavity 12 and the sound-absorbing paint can also play a good role in heat preservation and insulation, thereby preventing the loss of hot air or cold air temperature from entering the air distributor body 1 through the air conditioner.

[0052] The airflow that enters the vent 2 is then directed to the vent 3, and the airflow that enters the vent 3 is then directed to the vent 3. The airflow that enters the vent 3 is then directed to the vent 3, and the airflow that enters the vent 3 is then directed to the vent 3.

[0053] During use, the control motor 5 drives the first gear 10 to rotate slowly. The first gear 10 drives the rotating drum 11, the first guide cone 6, and the air distribution plate 4 to rotate as a whole through the gear ring 14, and the vertical shaft 16 cannot rotate along with it. Therefore, the rotating drum 11 and the vertical shaft 16 rotate relative to each other, and then the air distribution plate 4 and the driving plate 21 rotate relative to each other. Since a pair of rollers 26 at the end of each driving rack 25 are respectively located on the inner and outer sides of the outer flange of the driving plate 21, and due to the arrangement of the arc-shaped recesses and protrusions on the outer periphery of the driving plate 21, the driving rack 25 will gradually reciprocate along the radial displacement of the air distribution plate 4, thereby The driving rack 25 drives the rotating shaft 31 to rotate through the second gear 29, and the rotating shaft 31 drives the adjusting shaft 27 to rotate through the universal joint 28. The adjusting shaft 27 drives the air distribution plate 15 to continuously reciprocate and change the inclination angle. Part of the airflow coming out of the air outlet 3 is guided by the first guide cone 6 and can flow horizontally to the surroundings along the top of the air distribution plate 4, while the remaining part of the airflow will flow obliquely downward along the bottom of the air distribution plate 15 due to the inclination of the air distribution plate 15. The continuous inclination angle change of the air distribution plate 15 and the continuous rotation of the air distribution plate 4 can realize the layout of multi-directional airflow to improve the comfort of the cabin;

[0054] In addition, if you want to adjust the air volume entering the cabin, you can drive the screw 34 to rotate by turning the knob 13. The longitudinal displacement of the screw 34 drives the two traction plates 9 to move longitudinally through the connecting arm 20. One end of the traction plate 9 drives the rotating drum 11, the first guide cone 6, and the air distribution plate 4 to move longitudinally as a whole through the first guide hole 33. The other end of the traction plate 9 drives the second guide cone 8 to move laterally under the action of the guide groove 19 and the guide shaft 35. Therefore, when the first guide cone 6 moves upward, the air volume of the air outlet 3 decreases, and at this time the second guide cone 8 approaches the air inlet 2, and the air volume of the air inlet 2 also decreases synchronously. The same is true when the air volume is increased. Synchronously adjusting the size of the air inlet and the air outlet helps to maintain the balance of the ventilation system, keep the air inlet and air outlet relatively consistent, reduce internal pressure fluctuations, improve the stability of the system, and help reduce noise.

[0055] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A sound-absorbing air cabinet for cabin ventilation, comprising an air cabinet body (1), an air inlet (2) arranged at one end of the air cabinet body (1), and an air outlet (3) arranged at the bottom of the air cabinet body (1), characterized in that: The air outlet (3) is provided with a uniform air distribution component, and the uniform air distribution component comprises a driving component and a flow guide component; The air guide assembly comprises a first air guide cone (6) in an inverted cone shape arranged below the air outlet (3); an annular air distribution plate (4) is fixedly arranged on the outer side of the lower end of the first air guide cone (6); through grooves (23) are evenly arranged on the periphery of the air distribution plate (4); the through grooves (23) are rotatably connected to an adjustment shaft (27) radially perpendicular to the air distribution plate (4); and an air distribution plate (15) is fixedly arranged on the adjustment shaft (27); The driving assembly comprises a rotating drum (11) fixedly arranged on the top of the first guide cone (6), a second driving groove (37) is arranged on the inner side of the lower end of the first guide cone (6), a vertical shaft (16) is vertically arranged at the top of the inner cavity of the air distributor body (1) and at the corresponding position of the rotating drum (11), the lower end of the vertical shaft (16) extends to the inner side of the second driving groove (37) and is fixedly arranged with a driving disk (21), and the vertical shaft (16) is rotatably connected to the rotating drum (11) and the inner side of the first guide cone (6), and the outer side of the upper end of the rotating drum (11) is provided with a plurality of rotating shafts (16). A gear ring (14) is fixedly arranged, a first gear (10) meshing with the gear ring (14) is arranged at one end of the inner side of the air distribution device body (1), a motor (5) for driving the first gear (10) to rotate is arranged at the upper end of the air distribution device body (1), arc-shaped depressions corresponding to the air distribution plates (15) are evenly arranged on the periphery of the driving disk (21), and arc-shaped protrusions are formed between adjacent arc-shaped depressions, and a groove (22) matching the shape of the driving disk (21) is arranged at the bottom of the driving disk (21), and the inner wall of the groove (22) is in contact with the driving disk (21). A flange is formed between the outer walls of the disk (21), and the inner side of the outer periphery of the air distribution disk (4) is evenly provided with a first driving groove (24) spaced apart from the through groove (23) and corresponding to the second driving groove (37), one end of the adjusting shaft (27) extends to the inner side of the first driving groove (24), and a rotating shaft (31) corresponding to the adjusting shaft (27) and radially perpendicular to the air distribution disk (4) is rotatably provided at one end of the inner side of the first driving groove (24), and one end of the rotating shaft (31) is connected to one end of the adjusting shaft (27) extending to the inner side of the first driving groove (24). A universal joint (28) is arranged between the first driving groove (22) and the second gear (29) is arranged on the rotating shaft (31); a driving rack (25) meshing with the second gear (29) is movably connected to the inner side of the first driving groove (24) along the radial direction of the air distribution disk (4); one end of the driving rack (25) extends to the inner side of the second driving groove (37) and is rotatably arranged on a pair of vertical rollers (26); the two rollers (26) are respectively located on the inner side of the groove (22) and the outer side of the driving disk (21); and the spacing between the two rollers (26) is adapted to the flange wall thickness.

2. The sound-absorbing air distribution device for cabin ventilation according to claim 1 is characterized in that: A second guide hole (38) having a regular polygonal cross section is provided at the top of the vertical axis (16); a guide column (17) is vertically movable and guide-connected inside the second guide hole (38); and the top of the guide column (17) is fixedly connected to the top of the inner cavity of the air distributor body (1).

3. The sound-absorbing air distribution device for cabin ventilation according to claim 1 is characterized in that: The air distribution piece (15) is fan-shaped, and the size of the air distribution piece (15) is smaller than the size of the through slot (23).

4. The sound-absorbing air distribution device for cabin ventilation according to claim 1 is characterized in that: A first guide hole (33) is provided at one end of the driving rack (25) away from the roller (26); a guide rod (30) is movably connected to the first guide hole (33); and one end of the guide rod (30) away from the driving rack (25) is fixedly connected to the inner wall of the first driving groove (24); and a spring (32) located outside the first guide hole (33) is sleeved on the outer side of the guide rod (30).

5. The sound-absorbing air distribution device for cabin ventilation according to claim 2 is characterized in that: A second guide cone (8) corresponding to the air inlet (2) is movably arranged on the inner side of the air distributor body (1) at one end close to the air inlet (2) in a transverse manner.

6. The sound-absorbing air distribution device for cabin ventilation according to claim 5, characterized in that: The air volume regulating assembly is provided in the air distributor body (1), and the air volume regulating assembly comprises a traction plate (9) vertically movably arranged at the front and rear ends of the inner side of the air distributor body (1); an inclined guide groove (19) is provided on the side surface of one end of the traction plate (9) close to the second guide cone (8); a first guide hole (33) corresponding to the rotating drum (11) is fixedly connected to the side wall of one end of the traction plate (9) away from the second guide cone (8); a rotating ring (18) corresponding to the first guide hole (33) is rotatably connected to the upper end of the rotating drum (11), and the first guide hole (33) is away from the traction plate (9). One end of the second guide cone (8) is fixedly connected to the outer wall of the rotating ring (18), and guide shafts (35) corresponding to the guide groove (19) are symmetrically arranged on the front and rear sides of the second guide cone (8), and one end of the guide shaft (35) away from the second guide cone (8) is movably guided and connected to the inner side of the guide groove (19), and a connecting arm (20) is fixedly arranged between the two traction plates (9), and a screw rod (34) corresponding to the connecting arm (20) is vertically threadedly connected to the bottom of the air distributor body (1), and the upper end of the screw rod (34) is rotatably connected to the connecting arm (20), and a knob (13) is arranged at the bottom of the screw rod (34).

7. The sound-absorbing air distribution device for cabin ventilation according to claim 6 is characterized in that: The guide groove (19) and the guide shaft (35) are configured so that when the traction plate (9) moves upward, the second guide cone (8) moves closer to the direction of the air inlet (2).

8. The sound-absorbing air distribution device for cabin ventilation according to claim 5 is characterized in that: The second guide cone (8) is provided with an opening on a side away from the air inlet (2); The inner wall of the air distributor body (1) is fitted with a sound-absorbing cotton felt (7), and the end of the sound-absorbing cotton felt (7) away from the air inlet (2) is an arc-shaped surface.

9. The sound-absorbing air distribution device for cabin ventilation according to claim 8, characterized in that: A cavity (12) is provided inside the wall of the air distributor body (1).

10. The sound-absorbing air distribution device for cabin ventilation according to claim 9, characterized in that: The inner wall of the air inlet (2), the inner wall of the air outlet (3), the inner and outer walls of the second guide cone (8), the outer wall of the first guide cone (6), the top of the air distribution plate (4) and the bottom of the air distribution plate (15) are all provided with sound-absorbing paint.

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